Kant, Grounding for the Metaphysics of Morals, Critique of Pure Reason

Hegel, "Philosophy of Spirit" Part 3 of the Encyclopedia of Philosophic Sciences

Kierkegaard, Fear and Trembling, Concluding Unscientific Postscript

Mill, Utilitarianism, On Liberty, The Subjection of Women

Nietzsche, Genealogy of Morals, Thus Spake Zarathustra

Bergson, An Introduction to Metaphysics

Husserl, Ideas I, sec. 2: "The Fundamental Phemomenological Outlook," "Philosophy and the Crisis
of European Humanity" (Vienna Lecture, in the appendix to Crisis of European Sciences and Transcendental Phenomenology)